Home / 13,047.48-18,005.56-7,079.20

Finding the Fourth Proportional to 13,047.48, 18,005.56 and 7,079.20

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Solution

The fourth proportional to 13,047.48, 18,005.56 and 7,079.20 is: 9,769.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,047.48 : 18,005.56 = 7,079.20 : x
  2. Step 2: Convert to fraction form
    13,047.48/18,005.56 = 7,079.20/x
  3. Step 3: Cross multiply
    13,047.48x = 18,005.56 × 7,079.20
  4. Step 4: Simplify right side
    13,047.48x = 127,464,897.64
  5. Step 5: Solve for x
    x = 127,464,897.64/13,047.48
  6. Step 6: Final answer
    x = 9,769.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.